Lecture #4: Hip & Gluteal by Erin Williams-Hatala https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f en-us 2021-09-01 15:20:49 UTC 2025-11-19 01:23:24 UTC hello@padlet.com Question #1 ewilliamshatala2 https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f/wish/1710201431 Derive the somatic efferent innervation pathway of piriformis between the muscle and the spinal cord. Indicate starting and ending points.
ANSWER: (start) Anterior grey horns of S1 & S2 / anterior white columns of S1 & S2 / anterior roots of S1 & S2 / spinal nerves of S1 & S2 / anterior rami of S1 & S2 / nerve to piriformis (end point)

]]> 2021-09-01 15:25:29 UTC https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f/wish/1710201431 Question #2 ewilliamshatala2 https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f/wish/1710226827 Derive the somatic efferent innervation pathway of piriformis between the muscle and the spinal cord. Indicate starting and ending points AND include the path of the nerve and significant landmarks along the way.
ANSWER: (start) Anterior grey horns of S1 & S2 / anterior white columns of S1 & S2 / anterior roots of S1 & S2 / spinal nerves of S1 & S2 (pass through intervertebral foramina) / anterior rami of S1 & S2 (converge to form nerve to piriformis on the deep surface of piriformis muscle within the pelvis and then enters the muscle) 


]]> 2021-09-01 15:35:29 UTC https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f/wish/1710226827 Question #3 ewilliamshatala2 https://padlet.com/ewilliamshatala2/7ud7wk6ipa9s585f/wish/1710252079 Describe the function of gluteus maximus during walking gait by providing the following information: 
A) the period(s) in which it is active
B) its function during each period(s)
Answer:
Phases active:
IC, LR & TSw 
 
Function during each phase:
IC & LR: acting to oppose tendency of the body to fall forward about the hip by pulling back on the pelvis from the insertion 
 
TSw: acting to restrain forward movement of thigh by pulling back on thigh from the pelvis 
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